app.py

from flask import Flask, render_template, send_from_directory
import os

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/images/<path:filename>')
def images(filename):
    # After flattening repository, images are at the project root. Serve from root.
    return send_from_directory(app.root_path, filename)

@app.route('/pngegg.png')
def tree_png():
    return send_from_directory(app.root_path, 'pngegg.png')

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000, debug=True)